docs: def ephemeral(*,
                port: int = 6060,
                timeout_connection: int = 30,
                verbose: bool = False
                ) -> Iterator[Client]:
      """
      Launches an ephemeral server instance that will be immediately
      close when no longer in context.
  
      Parameters:
          port: the port that the server should run on.
          verbose: if set to True, the server will print its output to the
              stdout, otherwise it will remain silent.
  
      Returns:
          a client for communicating with the server.
      """
      url = "http://127.0.0.1:{}".format(port)
      cmd = ["bugzood", "--debug", "-p", str(port)]
      try:
          stdout = None if verbose else subprocess.DEVNULL
          stderr = None if verbose else subprocess.DEVNULL
          proc = subprocess.Popen(cmd,
                                  preexec_fn=os.setsid,
                                  stdout=stdout,
                                  stderr=stderr)
          yield Client(url, timeout_connection=timeout_connection)
      finally:
          os.killpg(proc.pid, signal.SIGTERM)